Departure of Bahá’u’lláh from the Garden of Ridván,

Already, as Nabíl has pointed out in his narrative, Bahá’u’lláh had, in the course of His discourses, during the last years of His sojourn in Baghdád, alluded to the period of trial and turmoil that was inexorably approaching, exhibiting a sadness and heaviness of heart which greatly perturbed those around Him. A dream which He had at that time, the ominous character of which could not be mistaken, served to confirm the fears and misgivings that had assailed His companions. “I saw,” He wrote in a Tablet, “the Prophets and the Messengers gather and seat themselves around Me,
moaning, weeping and loudly lamenting. Amazed, I inquired of them the reason, whereupon their lamentation and weeping waxed greater, and they said unto me: ‘We weep for Thee, O Most Great Mystery, O Tabernacle of Immortality!’ They wept with such a weeping that I too wept with them. Thereupon the Concourse on high addressed Me saying: ‘...Erelong shalt Thou behold with Thine own eyes what no Prophet hath beheld.... Be patient, be patient.’... They continued addressing Me the whole night until the approach of dawn.” “Oceans of sorrow,” Nabíl affirms, “surged in the hearts of the listeners when the Tablet of the Holy Mariner was read aloud to them.... It was evident to every one that the chapter of Baghdád was about to be closed, and a new one opened, in its stead.

Shoghi Effendi, ‘God Passes By’